In the ocean's twilight zone, where the reach of the Sun fades to nothing, an epic migration begins every time night falls. It could also have an outsized effect on our climate.

A vast nighttime feeding run in the ocean's twilight zone sends trillions of tiny animals toward the surface; when they head ...

Only a scattering of light penetrates the deep water, more than 300 feet beneath the ocean surface off the coast of Guam. It’s like twilight to the human eye, even in the middle of the day. This part ...

Fishing experts are looking for ways to fish in the mesopelagic zone, a layer of water that stretches from 200-1,000 meters (660-3,300 feet) beneath the surface, which has, thus far, remained ...

Generation after generation of scientists have dedicated energy to one unassuming animal. University of California researchers have gathered 350,000 observations on over 50,000 elephant seals over ...

Below the sunlit ocean surface, hundreds of feet down, is a shadow world where light barely reaches and pressure is crushing, and a whole community of fish has been quietly disappearing. These aren’t ...

It's a rule of thumb -- or fin -- for the ocean: The deeper you dive, the weirder things get. Now, a new exhibit lets visitors jump straight into the strangest layer of the ocean, bringing the ...

Mr. Fox is an author who grew up on an island off the coast of Maine. He spent the last three years reporting on climate change and its effect on the oceans and extreme weather. See more of our ...

This zone contains a vast amount of marine life, potentially over 90% of all ocean life, and supports important commercial and recreational fisheries. Creatures in the twilight zone help mitigate ...

GUAM — Only a scattering of light penetrates the deep water, more than 300 feet beneath the ocean surface off the coast of Guam. It's like twilight to the human eye, even in the middle of the day.

The deep sea is cold, dark and under immense pressure. Yet life has found a way to prevail there, in the form of some of Earth's strangest creatures. Since deep-sea critters have adapted to near ...